8. about:network - this page could be used for I/O tracking and it's a partial replacement for the Live HTTP Headers extension. Click on "Start I/O tracking", open a web page in a new tab and you'll get a list of all the images, scripts and objects loaded from that web page.

9. about:crash - crash the active tab. Google Chrome displays the "sad tab" image, followed by this message: "Something went wrong while displaying this webpage. To continue, press Reload or go to another page".

10. about:hang - type this in the address bar of a tab when there's already an active web page to hang the process (this means that the process no longer accepts any signal, but it's still running). The other tabs will continue to work and the active tab can be closed.

11. about:internets - this is an Easter egg that references two popular Internet memes: Internets and Series of tubes. Google Chrome embeds the 3D Pipes screensaver from Windows, so you'll see it only if you have the file sspipes.scr in C:\Windows\System32.